Mold of linotype-machines.



ml 672,|99. Patented Apr. l6, l90l. m. H. WHITTAKER & c. H. WEST.

MOLD 0F LINOTYPE MACHINES.

(Application filed Jan. 18, 1901.) (N0 Modal.)

N MOW @E F 712 UNITED STATES PATENT OFFICE.

MATTHEW HENRY WHITTAKER, OF SALFORD, AND CHARLES HENRY WEST, OF LEEDS,ENGLAND, ASSIGNORS TO THE MERGENTHALER LINOTYPE COMPANY, OF NEW YORK, N.Y.

MOLD OF LlNOTYPE-MACHINES SPECIFICATION formingpart of Letters PatentNo. 672,199, dated April 16, 1901.

Application filed January 18, 190i. Serial No 43,799. (No model.)

f 00 whom it may concern: ing ribs on one side of the said body, there-Be it known that we, MATTHEW HENRY by producing what ispracticallyat-aper lino- WHITTAKER, of Salford, in the county ofLantype, wider across the top than across its foot caster, and CHARLESHENRY WEST, of Leeds, by as much as the radius of the impressionin thecounty of Yorlz,England,have invented cylinder may render necessary toprovide for certain new and useful Improvements in the the taperlinotypes fitting close up to each Molds of Linotype-Machines; and we dohereother over their sides when they stand in the by declare thefollowing to be a full, clear, above-described position on theimpressionand exact description of the invention, such cylinder or inthe'fudge-box. Hithertoapar- :o as willenable others skilled in the artto which allel linotype has been ejected or pushed out it appertains tomake and use the same. of the mold of a Mergenthaler linotype-ma- Thepresent invention relates to improvechine,printingedgefirst,betweenapairofparments in the molds of linotype-machines. allelknives which have trimmed off both its A linotype is a bar of type-metalas long as sides, and now if tapered linotypes are wanted 15 a column ora page of printed matter is wide the knife on the ribbed side of thelinotype is 5 and having along one of its edges the typemoved out ofworkingposition. If,on theother faces duly composed, spaced, andjustified hand, parallel linotypes are wanted, the said into words forprinting a line. The mold for knife is left in working position. Thiscathe type-facesis constituted byaline of forma pacity on the part ofthe knife on the ribbed 2o tive cavities or matrices proper in a line ofside of being moved out of working position matrix plates or bars, andthat for the body and back again is no part of the present inof thelinotype by a slot of the proper size in vention, being already wellknown.

a suitable block of metal. When -the two When leads -that is,linotypebodies molds just described are made to register onlyare to becast in a linotype-machine,

25 with each other in the proper respective posithe mold forprinting-faces is replaced by a tions and the back of the body-mold isclosed, plate which closes the respective side of the melted type-metalis injected into the comslot 0. It is obvious that if the linotypespound mold, a linotype being thereby cast. themselves must be taperedfrom printing The sides and ends of the slot above menedge to foot theleads must be tapered like- 30 tioned are parallel with each other,respecwise. That being the case the present inven- 8o tively, and allits angles are right angles, the tion is as applicable to the casting ofone as linotype body having necessarily a correit is of the other.

sponding form. Consequently the linotypes Referring to the accompanyingdrawings, are not adapted when they are set on their which are to betaken as part of this specifi- 35 feet on an impression-cylinder withthe said cation and read therewith, Figure 1 is a front feet parallelwith the cylinder-axis to fit close elevation of a mold-block of thewell-known up to each other over their sides, because the Mergenthalerlinotype-machine made accordlatter are parallel with each other and onlying to the present invention; Fig. 2, a plan linotypes having taperingsides can fit up to of Fig. 1; Fig. 3, an inverted plan of the cap- 40each other in such a position. This incapacity plate of the saidmold-block; Fig. 4, a pers pec- 0 of parallel linotypes for fittingclose up to tive view of a linotype cast in the improved each other overtheir sides does not matter mold-block, and Fig. 5 a section of threesuch in printing-offices where curved stereoplates linotypes. are usedon the impression-cylinders; but it 1 is the cap-plate; 2, the bottomplate; 3 3,

5 makes itself felt whenever it is desired to the end liners, and t lthescrews holding the 5 print from linotypes held on the impressionfourparts togetherin the respective positions,

cylinder or in a fudge-box parallel with the thereby establishing theslot 0. The oppoaxis of the said cylinder. site faces of the plates 1and 2 constitute the The object of the present invention is to abovesides of the slot, and the opposite faces adapt the linotype body-moldto cast taperof the liners 3 3 the above-mentioned ends distance betweenthe printed lines.

thereof. 5 5 are transverse grooves in the face of either the cap-platel or that of the bottom plate 2. For convenience sake they arein theface of the cap-plate 1. Two only are shown; but that number may beincreased. No matter how many there are they are arranged symmetricallyalong the said face. These grooves are shown as semicircular incross-section. They may be of any one that will give the resulting ribs6 6 a good bearing-surface against the adjacent linotypes '7; but theyare all equally tapered from one end to the other, the depth at thedeepest end being proportioned to the radius of the impression-cylinderon which the linotypes 7 cast in the slot 0 are to stand. The taper isgradual from the deepest end to practically nothing, or nearly to that,at the opposite end of the said grooves, as shown in Fig. 3, and is sopositioned across the face of the plate that the deepest end is next tothat side of the slot 0 with which, front or rear, as the case may be,the mold for the printing-faces on the linotype 7 registers.

We are aware that the specification of Letters Patent No. 436,532, datedSeptember 16, 1890, describes molds for linotype-machines havingtransverse grooves of equal depth throughout in one of their plates tocast ribs on one side of each linotype, the function of such ribs beingto increase the distance between the printing edges of the linotypes forthe purpose of increasing the normal These grooves are hereinafterreferred to as leading-grooves, but the essence of the present inventionis not grooves as such nor the transverse position thereof. It is thetapered cross-section in a given direction of not less than two grooves.Nevertheless, if linotypes ribbed to increase the normal distancebetween the printed lines and tapered also are required the grooves 5are deepened equally throughout their length accordingly, which willhave the efiect of making them a combination of the leading-groovesabove mentioned, with the plate 1 or 2 on one side and with the taperedgrooves 6 on the other, the leading portion of the compound groove beingof equal depth throughout, or the leading-grooves may be in one platesaythe plate 1and the tapered grooves in the other.

9 is a spring-plate held by a screw 10 passed through one end of it downinto the plate having the grooves 5. 11 is a small sphere having aportion of it less than one-half projected by the spring-plate 9 througha suitable hole 12 into the respective groove 5 near the deepest end ofit. There is one plate 6 and sphere 8 combined with each groove 5, theobject of such combinations being to prevent the taper of the grooves 5contributing to the linotypes beginning to leave the slot 0 before theproper ejecting mechanism acts on them by engaging in notches 13 in theribs 6.

We are aware that type-molds and linotypemolds have been provided withmovable pins protruding into the mold and engaging the type or slug casttherein, such pins being combined with mechanical devices for retractingthem in order to permit the ejection of the type or slug. In ourstructure the retaining device 11 is rounded and held to its place by aspring, the form and arrangement being such that when a pressuresufiicient to eject the slug is applied thereto the spheres or retainingdevices will yield automatically and permit the escape of the slug. Nomechanism is necessary for retracting the spheres, and it is theiradaptability to operate automatically without the cooperation ofcontrolling mechanism that forms the essence of our invention.

WVe claim- 1. A slotted linotype-mold having in one side a plurality oftransverse grooves increasing in depth toward the forward side.

2. A linotype-mold having therein a slot of uniform thickness from frontto rear, and also having on one of its inner surfaces a plurality oftransverse grooves increasing in depth from one end to the other,wherebyit is adapted to produceaslug having a body of substantiallyuniform thickness with tapered ribs thereon.

3. A linotype-mold having a slot therethrough and tapered grooves in onewall of the slot, in combination with automaticallyyielding membersprojecting into said grooves to prevent the premature movement of theslug cast in the mold.

4. In a slotted linotype mold, rounded, movable members 11 to retain theslug in position, in combination with springs to hold said projectionsnorm allyin engagement with the slug, whereby the retaining members 11are adapted to yield automatically under the influence of the outgoingslug.

5. In a linotype-mold, a spring-supported device, adapted to yield whenpressure is applied to the slug to effect its ejection from the mold.

In witness whereof we have hereunto set our hands in the presence of twowitnesses.

MATTHEW HENRY WHITTAKER. CHARLES HENRI WEST.

Witnesses:

J OSH HY WHITAKER, JOHN HY WILLIAMSON.

